Regular Expressions in User Profile Field Manager

[snksnk]

Hello,

I'm not used to regular expressions much- I'm a novice!

I'm wanting the User Profile to have a Field which the user must input on registration (which I have done). Now I noticed this has a 'Regular Expression' field, which is also what I wanted.

However, I'm confused. I'd like the user to input something like

Iland0123456
Iland6543210

So the first five letters always need to be 'Iland' however, the numbers can be longer. Any suggestions?

[snksnk]

Apologies,

I'm used to expressions like this

Iland[0-9][0-9][0-9][0-9][0-9][0-9][0-9]

EDIT: I tried this and it actually works... Ignore this thread!